Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints
- Autores
- Cuitiño, José Ignacio; Santos, Roberto Ventura; Scasso, Roberto Adrian
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The early Miocene Patagoniense transgression in southwestern Patagonia, Argentina (Estancia 25 de Mayo Formation), consists of shallow marine to estuarine deposits that bear numerous oyster shell beds distributed all over the sedimentary column. Sedimentary facies analysis reveal that oysters grew in the nearshore paleoenvironments of the stratigraphically lower Quién Sabe Member, as well as in the tide-dominated, shallow marine to estuarine paleoenvironments ofthe upper Bandurrias 26 Member. Two species lying in separate portions of the column were identified: Crassostrea? hatcheri, distributed in the lower two thirds of the column and Crassostrea orbignyi, distributed in the upper third of the column, within the transition from marine to fluvial deposits. Petrographic, cathodoluminiscence, and carbon and oxygen stable isotope analyses for individual growth increments were performed on all the oyster beds, together with serialized intra-shell analyses for one specimen of each species. The stable isotope composition of the shell was found to be strongly controlled by the microstructure due to selective diagenetic alteration of the chalky material whereas translucent (foliated and prismatic) layers are well preserved and can be used to infer paleoenvironmental conditions. Isotopic and sedimentologic data indicates that C.? hatcheri lived in shallow, normal marine waters with a range of paleotemperatures from 11º to 19ºC. Monospecific beds of this oyster are related to opportunistic and quick colonization of sea bottom. Decreasing growth rates along the ontogeny of thisoyster are registered. Highly depleted C and O isotope ratios in C. orbignyi shells resulted from paleosalinity decrease, and environmental stress controlled the development of these low-diversity oyster accumulations. The separate stratigraphic distribution of each oyster species was therefore controlled by the paleoenvironmental conditions.
Fil: Cuitiño, José Ignacio. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Santos, Roberto Ventura. Universidade Do Brasilia; Brasil
Fil: Scasso, Roberto Adrian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina - Materia
-
Stable Isotopes
Paleoenvironments
Paleosalinity
Oysters
Shell Microstructure - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/18042
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Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraintsCuitiño, José IgnacioSantos, Roberto VenturaScasso, Roberto AdrianStable IsotopesPaleoenvironmentsPaleosalinityOystersShell Microstructurehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The early Miocene Patagoniense transgression in southwestern Patagonia, Argentina (Estancia 25 de Mayo Formation), consists of shallow marine to estuarine deposits that bear numerous oyster shell beds distributed all over the sedimentary column. Sedimentary facies analysis reveal that oysters grew in the nearshore paleoenvironments of the stratigraphically lower Quién Sabe Member, as well as in the tide-dominated, shallow marine to estuarine paleoenvironments ofthe upper Bandurrias 26 Member. Two species lying in separate portions of the column were identified: Crassostrea? hatcheri, distributed in the lower two thirds of the column and Crassostrea orbignyi, distributed in the upper third of the column, within the transition from marine to fluvial deposits. Petrographic, cathodoluminiscence, and carbon and oxygen stable isotope analyses for individual growth increments were performed on all the oyster beds, together with serialized intra-shell analyses for one specimen of each species. The stable isotope composition of the shell was found to be strongly controlled by the microstructure due to selective diagenetic alteration of the chalky material whereas translucent (foliated and prismatic) layers are well preserved and can be used to infer paleoenvironmental conditions. Isotopic and sedimentologic data indicates that C.? hatcheri lived in shallow, normal marine waters with a range of paleotemperatures from 11º to 19ºC. Monospecific beds of this oyster are related to opportunistic and quick colonization of sea bottom. Decreasing growth rates along the ontogeny of thisoyster are registered. Highly depleted C and O isotope ratios in C. orbignyi shells resulted from paleosalinity decrease, and environmental stress controlled the development of these low-diversity oyster accumulations. The separate stratigraphic distribution of each oyster species was therefore controlled by the paleoenvironmental conditions.Fil: Cuitiño, José Ignacio. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Santos, Roberto Ventura. Universidade Do Brasilia; BrasilFil: Scasso, Roberto Adrian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaSociety For Sedimentary Geology2013-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/18042Cuitiño, José Ignacio; Santos, Roberto Ventura; Scasso, Roberto Adrian; Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints; Society For Sedimentary Geology; Palaios; 28; 6-2013; 583-5980883-1351enginfo:eu-repo/semantics/altIdentifier/url/http://palaios.geoscienceworld.org/content/28/9/583info:eu-repo/semantics/altIdentifier/doi/10.2110/palo.2012.p12-105rinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:18:35Zoai:ri.conicet.gov.ar:11336/18042instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:18:35.305CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints |
title |
Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints |
spellingShingle |
Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints Cuitiño, José Ignacio Stable Isotopes Paleoenvironments Paleosalinity Oysters Shell Microstructure |
title_short |
Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints |
title_full |
Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints |
title_fullStr |
Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints |
title_full_unstemmed |
Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints |
title_sort |
Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints |
dc.creator.none.fl_str_mv |
Cuitiño, José Ignacio Santos, Roberto Ventura Scasso, Roberto Adrian |
author |
Cuitiño, José Ignacio |
author_facet |
Cuitiño, José Ignacio Santos, Roberto Ventura Scasso, Roberto Adrian |
author_role |
author |
author2 |
Santos, Roberto Ventura Scasso, Roberto Adrian |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Stable Isotopes Paleoenvironments Paleosalinity Oysters Shell Microstructure |
topic |
Stable Isotopes Paleoenvironments Paleosalinity Oysters Shell Microstructure |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The early Miocene Patagoniense transgression in southwestern Patagonia, Argentina (Estancia 25 de Mayo Formation), consists of shallow marine to estuarine deposits that bear numerous oyster shell beds distributed all over the sedimentary column. Sedimentary facies analysis reveal that oysters grew in the nearshore paleoenvironments of the stratigraphically lower Quién Sabe Member, as well as in the tide-dominated, shallow marine to estuarine paleoenvironments ofthe upper Bandurrias 26 Member. Two species lying in separate portions of the column were identified: Crassostrea? hatcheri, distributed in the lower two thirds of the column and Crassostrea orbignyi, distributed in the upper third of the column, within the transition from marine to fluvial deposits. Petrographic, cathodoluminiscence, and carbon and oxygen stable isotope analyses for individual growth increments were performed on all the oyster beds, together with serialized intra-shell analyses for one specimen of each species. The stable isotope composition of the shell was found to be strongly controlled by the microstructure due to selective diagenetic alteration of the chalky material whereas translucent (foliated and prismatic) layers are well preserved and can be used to infer paleoenvironmental conditions. Isotopic and sedimentologic data indicates that C.? hatcheri lived in shallow, normal marine waters with a range of paleotemperatures from 11º to 19ºC. Monospecific beds of this oyster are related to opportunistic and quick colonization of sea bottom. Decreasing growth rates along the ontogeny of thisoyster are registered. Highly depleted C and O isotope ratios in C. orbignyi shells resulted from paleosalinity decrease, and environmental stress controlled the development of these low-diversity oyster accumulations. The separate stratigraphic distribution of each oyster species was therefore controlled by the paleoenvironmental conditions. Fil: Cuitiño, José Ignacio. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina Fil: Santos, Roberto Ventura. Universidade Do Brasilia; Brasil Fil: Scasso, Roberto Adrian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina |
description |
The early Miocene Patagoniense transgression in southwestern Patagonia, Argentina (Estancia 25 de Mayo Formation), consists of shallow marine to estuarine deposits that bear numerous oyster shell beds distributed all over the sedimentary column. Sedimentary facies analysis reveal that oysters grew in the nearshore paleoenvironments of the stratigraphically lower Quién Sabe Member, as well as in the tide-dominated, shallow marine to estuarine paleoenvironments ofthe upper Bandurrias 26 Member. Two species lying in separate portions of the column were identified: Crassostrea? hatcheri, distributed in the lower two thirds of the column and Crassostrea orbignyi, distributed in the upper third of the column, within the transition from marine to fluvial deposits. Petrographic, cathodoluminiscence, and carbon and oxygen stable isotope analyses for individual growth increments were performed on all the oyster beds, together with serialized intra-shell analyses for one specimen of each species. The stable isotope composition of the shell was found to be strongly controlled by the microstructure due to selective diagenetic alteration of the chalky material whereas translucent (foliated and prismatic) layers are well preserved and can be used to infer paleoenvironmental conditions. Isotopic and sedimentologic data indicates that C.? hatcheri lived in shallow, normal marine waters with a range of paleotemperatures from 11º to 19ºC. Monospecific beds of this oyster are related to opportunistic and quick colonization of sea bottom. Decreasing growth rates along the ontogeny of thisoyster are registered. Highly depleted C and O isotope ratios in C. orbignyi shells resulted from paleosalinity decrease, and environmental stress controlled the development of these low-diversity oyster accumulations. The separate stratigraphic distribution of each oyster species was therefore controlled by the paleoenvironmental conditions. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-06 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/18042 Cuitiño, José Ignacio; Santos, Roberto Ventura; Scasso, Roberto Adrian; Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints; Society For Sedimentary Geology; Palaios; 28; 6-2013; 583-598 0883-1351 |
url |
http://hdl.handle.net/11336/18042 |
identifier_str_mv |
Cuitiño, José Ignacio; Santos, Roberto Ventura; Scasso, Roberto Adrian; Insights into the distribution of shallow-marine to estuarine Early Miocene oysters from southwestern Patagonia: sedimentologic and stable isotope constraints; Society For Sedimentary Geology; Palaios; 28; 6-2013; 583-598 0883-1351 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://palaios.geoscienceworld.org/content/28/9/583 info:eu-repo/semantics/altIdentifier/doi/10.2110/palo.2012.p12-105r |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Society For Sedimentary Geology |
publisher.none.fl_str_mv |
Society For Sedimentary Geology |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614149505548288 |
score |
13.070432 |